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Auto Scaling:DetachDBInstances

Last Updated:Aug 28, 2026

Detaches one or more ApsaraDB RDS instances from a scaling group to flexibly manage the association between your scaling group and ApsaraDB RDS instances.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

ess:DetachDBInstances

none

*ScalingGroup

acs:ess:{#regionId}:{#accountId}:scalinggroup/{#ScalingGroupId}

None None

Request parameters

Parameter

Type

Required

Description

Example

ScalingGroupId

string

Yes

The ID of the scaling group.

asg-bp1igpak5ft1flyp****

ForceDetach

boolean

No

Specifies whether to remove the private IP addresses of the existing instances in the scaling group from the IP address whitelist of the ApsaraDB RDS instance. Valid values:

  • true

  • false

Default value: false.

false

ClientToken

string

No

The client token used to ensure the idempotence of the request.

You can use the client to generate the token, but you must make sure that the token is unique among different requests. The token can contain only ASCII characters and cannot exceed 64 characters in length. For more information, see Ensure idempotence.

123e4567-e89b-12d3-a456-42665544****

DBInstances

array

Yes

The IDs of the ApsaraDB RDS instances. You can specify up to five ApsaraDB RDS instances.

string

No

The IDs of the ApsaraDB RDS instances. You can specify up to five ApsaraDB RDS instances.

rm-bp12cy3****

RegionId

string

No

The region ID of the scaling group.

cn-qingdao

RemoveSecurityGroup

boolean

No

Specifies whether to remove the security group. This parameter takes effect only if you set AttachMode to SecurityGroup. Valid values:

  • true

  • false

Default value: false.

false

Response elements

Element

Type

Description

Example

object

RequestId

string

The ID of the request.

473469C7-AA6F-4DC5-B3DB-A3DC0DE3****

Examples

Success response

JSON format

{
  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3****"
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.